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3 years ago

Solar panels allow us to harness energy and convert it to energy to heat water.

Physics

1 answer:

irga5000 [103]3 years ago

4 0

Answer:

2. electromagnetic; thermal

Explanation:

Electromagnetic energy is emitted by any body that has a temperature above absolute zero. For this reason, the entire body with a temperature above 276 degrees negative can be considered as a source of electromagnetic energy. The two main natural sources of electromagnetic energy are the Sun and the Earth.

A good example of the use of electromagnetic energy is that associated with solar energy, that is, making use of solar panels to collect energy from the Sun and thus use it to generate electricity. The use of solar panels has the main advantage of producing clean and renewable energy. In addition, the electromagnetic energy from the Sun can also be used to capture energy for satellites and also other devices that are in space and cannot make use of fossil fuels. In summary, we can say that solar panels are systems that convert electromagnetic energy into thermal energy.

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klemol [59]

Answer:24

Explanation:

7 0

2 years ago

This is a velocity versus time graph of a car starting from rest. If the area under the line is 10 meters: what is the correspon

shtirl [24]

Answer: The correct answer is option (D).

Explanation:

The area under the line is 10 meters that is displacement which means that area enclosed by the right angled triangle is 10 unit squares.

So, the it can be written as:

$\text{area of triangle}=\frac{1}{2}\times velocity\times time$

$10=\frac{1}{2}\times 2.0 m/s\times time$

$time =10 seconds$

Hence the, the correct answer is option (D).

6 0

3 years ago

A 1000 kg mass car moved in a straight, horizontal motion, with a speed of 20m / s, when it was involved in an accident. It was

emmasim [6.3K]

Answer:

average value of the resulting force

Explanation:

The average module value of this resulting force is equivalent to 2.0. 10⁵ N.

The impulse of a force can be calculated by the product of the intensity of the force applied by the time interval in which it is applied -

I = F.Δt

Where,

F = Strength in Newtons

Δt = time interval in seconds

I = Impulse in N.s

The impulse of a force is equivalent to the variation of the amount of movement it causes in the body.

I = ΔQ

The amount of movement is a vector quantity that results from the multiplication of the mass of a body by its speed. Its direction and direction are the same as the velocity vector of the body.

Q = m-V

As the car goes to rest after the application of force, the amount of final movement of the car is equivalent to zero.

I = 0 - mV

F. Δt = - mV

F. 0,1 = - 1000. 20

F = - 20000/0,1

F = 200,000 N

F = 2,0. 10⁵ N